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Finding the Fourth Proportional to 7,751.86, 10,554.45 and 7,727.26

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Solution

The fourth proportional to 7,751.86, 10,554.45 and 7,727.26 is: 10,520.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.86 : 10,554.45 = 7,727.26 : x
  2. Step 2: Convert to fraction form
    7,751.86/10,554.45 = 7,727.26/x
  3. Step 3: Cross multiply
    7,751.86x = 10,554.45 × 7,727.26
  4. Step 4: Simplify right side
    7,751.86x = 81,556,979.31
  5. Step 5: Solve for x
    x = 81,556,979.31/7,751.86
  6. Step 6: Final answer
    x = 10,520.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.